Hi all
Would you mind if we ask TPS561208?
We would like to confirm Figure15 TPS561208 VOUT = 3.3 V Efficiency, L = 3.3 µH.
<Question1>
Could you let us know the detail infomration of the inductor? Maker, part number.
<Question2>
Our customer measured the efficiency with two inductor coditions as follows.
However, the result was 74%.
4.7µH
Part No : VLCF4024T-4R7N1R4-2
DCR : 87mΩ
3.3µH
Part No : CLF6045NIT-3R3N
DCR : 19mΩ
<The result>
Vin=5.0V/106.5mA
Vout=3.3V/117.6mA
->The efficiency was 74%.
So, compared with Figure15, there is 16% difference.
If you have the advice to improve the efficiency, could you let us know?
Kind regards,
Hirotaka Matsumoto